CN112747059B - Torsional damper and damper device - Google Patents

Torsional damper and damper device Download PDF

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Publication number
CN112747059B
CN112747059B CN202011144301.3A CN202011144301A CN112747059B CN 112747059 B CN112747059 B CN 112747059B CN 202011144301 A CN202011144301 A CN 202011144301A CN 112747059 B CN112747059 B CN 112747059B
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CN
China
Prior art keywords
damper
coil spring
main body
torsional vibration
groove
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Active
Application number
CN202011144301.3A
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Chinese (zh)
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CN112747059A (en
Inventor
上原宏
萩原祥行
前田昌宏
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Exedy Corp
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Exedy Corp
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/10—Couplings with means for varying the angular relationship of two coaxial shafts during motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/42—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
    • F16F1/48—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing loaded mainly in torsion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
    • F16F15/123—Wound springs
    • F16F15/12313—Wound springs characterised by the dimension or shape of spring-containing windows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
    • F16F15/123—Wound springs
    • F16F15/12353—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
    • F16F15/127—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs using plastics springs combined with other types of springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0034—Materials; Production methods therefor non-metallic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/22—Vibration damping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
    • F16F15/1414—Masses driven by elastic elements
    • F16F15/1421—Metallic springs, e.g. coil or spiral springs
    • F16F15/1428—Metallic springs, e.g. coil or spiral springs with a single mass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2224/00—Materials; Material properties
    • F16F2224/02—Materials; Material properties solids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2232/00—Nature of movement
    • F16F2232/02—Rotary
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2234/00—Shape
    • F16F2234/02—Shape cylindrical

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • Mechanical Operated Clutches (AREA)
  • Springs (AREA)

Abstract

The present invention relates to a torsional damper and a damper device. Provided is a torsion damper capable of preventing biting between wires of coil springs. The torsion damper (10) is disposed in a coil spring (13). A torsional damper (10) is provided with a main body (2) and a groove (3). The main body (2) is made of resin. The main body (2) has a cylindrical shape. The groove (3) is formed on the outer peripheral surface of the main body (2).

Description

Torsional damper and damper device
Technical Field
The present invention relates to a torsional damper and a damper device.
Background
A damper device is used to absorb torque fluctuations of an engine, an electric motor, or the like. The damper device is mounted on a flywheel or the like, for example. The damper device includes an input member, an output member, and a coil spring. The input member and the output member are rotatable relative to each other. The coil spring elastically connects the input member and the output member.
Patent document 1 discloses a damper device in which a torsion damper is disposed in a coil spring. When abrupt torque fluctuations occur, the torque is transmitted to the torque converter via the torsional damper. The torsional damper is formed such that the diameter of the center portion is smaller than the diameters of both end portions in order to adjust the rigidity thereof.
Prior art literature
Patent literature
Patent document 1: japanese patent application laid-open No. 2000-205339
Disclosure of Invention
Problems to be solved by the invention
The opposite ends of the torsional damper may bite into the wires of the coil springs. Accordingly, an object of the present invention is to provide a torsional damper capable of preventing biting into a wire of a coil spring.
Solution for solving the technical problems
The torsion damper of the first aspect of the present invention is disposed in a coil spring. The torsional damper includes a main body portion and a groove portion. The main body is made of resin. The main body portion is cylindrical. The groove portion is formed on an outer peripheral surface of the main body portion.
According to this configuration, the rigidity of the torsional damper can be adjusted by the groove portion formed in the outer peripheral surface of the main body portion. That is, unlike the conventional torsional damper, the rigidity can be adjusted without making the center portion small in diameter. Therefore, the both end portions of the torsional damper can be prevented from biting into the wires of the coil springs.
Preferably, the groove portion extends in a spiral shape.
Preferably, the winding direction of the groove portion is opposite to the winding direction of the coil spring.
Preferably, the groove portion extends along an axial direction of the main body portion.
Preferably, the width of the groove portion is smaller than the wire diameter of the coil spring.
Preferably, the trough portion has a bottom portion and a pair of side wall portions. The pair of side wall portions are inclined so as to approach each other as approaching the bottom portion.
Preferably, the diameter of the main body portion is constant except for a portion where the groove portion is formed.
A damper device according to a second aspect of the present invention includes: a first rotating member, a second rotating member, a coil spring, and a torsional vibration damper of any of the foregoing. The first rotation member is configured to be rotatable. The second rotating member is configured to be capable of relative rotation with the first rotating member. The coil spring elastically connects the first rotating member and the second rotating member. The torsion damper is disposed in the coil spring.
Effects of the invention
According to the present invention, the torsion damper can be prevented from biting into the wire of the coil spring.
Drawings
Fig. 1 is a front view of a shock absorber device.
Fig. 2 is a sectional view taken along line II-II of fig. 1.
Fig. 3 is a perspective view of the torsional vibration damper.
Fig. 4 is a side view of a torsional vibration damper.
Fig. 5 is a side view showing the torsional vibration damper disposed in the coil spring.
Fig. 6 is a sectional view showing a groove portion of the torsional damper.
Fig. 7 is a cross-sectional view taken along line VII-VII of fig. 4.
Fig. 8 is a cross-sectional view taken along line VIII-VIII of fig. 4.
Fig. 9 is a cross-sectional view taken along line IX-IX of fig. 4.
Reference numerals illustrate:
10: a torsional vibration damper; 2: a main body portion; 3: a groove portion; 31: a side wall portion; 32: and a bottom.
Detailed Description
Next, an embodiment of the torsional vibration damper of the present invention will be described with reference to the drawings.
[ Integral Structure ]
Fig. 1 is a front view of a damper device 100, and fig. 2 is a sectional view taken along line II-II of fig. 1. In fig. 2, for example, an engine is disposed on the left side of the damper device 100, and a drive unit including a transmission device and the like is disposed on the right side. In the description using fig. 1 and 2, the axial direction refers to the direction in which the rotation axis O of the damper device 100 extends. The radial direction is a radial direction of a circle centered on the rotation axis O of the damper device 100. The circumferential direction is a circumferential direction of a circle centered on the rotation axis O of the damper device 100.
The damper device 100 is a device provided between a flywheel and an input shaft of a drive unit, and configured to attenuate torque fluctuations transmitted between an engine and the drive unit.
As shown in fig. 1 and 2, the damper device 100 includes: a pair of input plates 11a and 11b (an example of a first rotary member), a hub rim 12 (an example of a second rotary member), a plurality of coil springs 13, and a torsional damper 10.
< Input plates 11a, 11b >)
The pair of input plates 11a, 11b are arranged at a distance from each other in the axial direction. For example, a torque limiter unit (not shown) or the like may be connected to at least one of the pair of input plates 11a and 11 b.
Each of the input boards 11a and 11b has a plurality of windows 111. The plurality of windows 111 are arranged at intervals in the circumferential direction. The window 111 has a hole penetrating in the axial direction and a holding portion formed at the periphery of the hole. One of the pair of input plates 11a and 11b has a plurality of rivet holes 112 formed in an outer peripheral portion thereof for fitting a torque limiter unit or the like. The pair of input plates 11a, 11b are fixed to each other by rivets, and therefore cannot move in the axial direction and the rotational direction.
< Hub rim 12 >)
The hub rim 12 is disposed so as to be rotatable relative to the input plates 11a and 11 b. Hub rim 12 has a hub portion 121 and a flange portion 122. The hub 121 has a cylindrical shape, and a spline hole 123 is formed in the inner peripheral surface. The input shaft of the drive unit can be spline-engaged with the spline hole 123.
The flange 122 extends radially outward from the outer peripheral surface of the boss 121. The flange 122 is disk-shaped. The flange 122 is disposed between the pair of input plates 11a and 11 b.
The flange 122 has a plurality of receiving portions 124. Each of the storage portions 124 is formed at a position corresponding to the window portion 111 of the input board 11a, 11 b.
< Coil spring 13 >)
Each coil spring 13 elastically connects the pair of input plates 11a, 11b to the hub rim 12. The coil spring 13 is accommodated in the accommodating portion 124 of the hub rim 12. The coil spring 13 is held by the window portions 111 of the pair of input plates 11a, 11b in the axial direction and the radial direction. In addition, both end surfaces of the coil spring 13 can be abutted against end surfaces of the respective window portions 111 in the circumferential direction. In addition, both end surfaces of the coil spring 13 can abut against end surfaces of the housing portion 124 in the circumferential direction.
< Torsional vibration damper 10 >
The torsion damper 10 is disposed in the coil spring 13. The outer peripheral surface of the torsional vibration damper 10 abuts against the inner peripheral surface of the coil spring 13. Accordingly, the torsional vibration damper 10 is held by the coil spring 13. In a state where the coil spring 13 is not compressed, both end surfaces of the torsional vibration damper 10 are not in contact with any of the input plates 11a, 11b and the hub rim 12.
Fig. 3 is a perspective view of the torsional vibration damper 10, and fig. 4 is a side view of the torsional vibration damper 10. In the description using fig. 3 and 4, the axial direction refers to the direction in which the torsional vibration damper 10 extends. The radial direction is a radial direction of a circle centered on the center axis of the torsional vibration damper 10. The circumferential direction is a circumferential direction of a circle centered on the center axis of the torsional vibration damper 10.
As shown in fig. 3 and 4, the torsional damper 10 has a main body portion 2 and a plurality of groove portions 3. In the present embodiment, the torsional vibration damper 10 has two groove portions 3.
The main body 2 has a cylindrical shape. The diameter of the main body portion 2 is constant in the axial direction except for the portion where the groove portion 3 is formed. That is, the diameters of both end portions of the main body 2 are substantially the same as the diameter of the central portion of the main body 2. In addition, as shown in the present embodiment, when the body 2 is formed with a chamfer, the diameter of the body 2 is constant in the axial direction except for the chamfer and the groove 3.
The main body 2 is made of resin. Specifically, the main body 2 may be formed of a polyamide elastomer, a polyester elastomer, or the like.
Each groove 3 is formed on the outer peripheral surface of the main body 2. The rigidity of the torsional vibration damper 10 is adjusted by forming the groove portions 3. Each groove 3 extends in a spiral shape on the outer peripheral surface of the main body 2. The grooves 3 extend substantially parallel to each other.
Both end portions of the groove portion 3 are not connected to both end surfaces of the main body portion 2. That is, both end portions of the groove portion 3 are disposed with a gap from both end surfaces of the main body portion 2. Both end portions of the groove portion 3 are not opened in the axial direction.
As shown in fig. 5, the winding direction of the spiral groove portion 3 is opposite to the winding direction of the coil spring 13. Therefore, the torsion damper 10 can be more reliably prevented from biting into the wire of the coil spring 13. The length of the main body 2 is longer than the line length of the coil springs 13.
Fig. 6 is an enlarged cross-sectional view of the groove portion 3. In the description using fig. 6, the axial direction refers to the direction in which the torsional vibration damper 10 extends. The radial direction is a radial direction of a circle centered on the center axis of the torsional vibration damper 10. The circumferential direction is a circumferential direction of a circle centered on the center axis of the torsional vibration damper 10.
As shown in fig. 6, the groove portion 3 has a bottom portion 32 and a pair of side wall portions 31. The pair of side wall portions 31 are oriented in the axial direction. The pair of side wall portions 31 face each other. The bottom 32 faces radially outward. The pair of side wall portions 31 are inclined so as to approach each other as approaching the bottom portion 32. That is, the groove portion 3 expands outwardly.
As shown in fig. 7 to 9, the depth of each groove 3 is constant. The depths of the grooves 3 are the same as each other. Therefore, the distance between the bottom 32 of one groove portion 3 and the bottom 32 of the other groove portion 3 is constant in the axial direction.
Action
Power from the engine is input to the damper device 100 via a flywheel or the like. In the damper device 100, power is input from a pair of input plates 11a, 11b, and the power is transmitted to the hub rim 12 via the coil spring 13. Then, the power is further transmitted from the hub rim 12 to an output-side transmission or the like.
Specifically, in the damper device 100, when power is transmitted from the pair of input plates 11a and 11b to the coil spring 13, the coil spring 13 is compressed, and the coil spring 13 repeatedly expands and contracts due to torque fluctuation. When excessive torque fluctuation occurs, the coil spring 13 is further compressed, and power is transmitted from the pair of input plates 11a and 11b to the hub rim 12 via the torsional damper 10, not to the coil spring 13. At this time, the torsional vibration damper 10 compresses, and thus can absorb excessive torque fluctuation.
Other embodiments
The present invention is not limited to the above-described embodiments, and various modifications and changes can be made without departing from the scope of the present invention.
For example, in the above embodiment, the groove portion 3 extends in a spiral shape, but the configuration of the groove portion 3 is not limited thereto. For example, the groove portion 3 may extend in the axial direction of the body portion 2. In this case, it is preferable that the torsional vibration damper 10 has a plurality of groove portions 3. The groove portions 3 are preferably arranged at equal intervals in the circumferential direction of the torsional damper 10.
The groove 3 may extend in a ring shape along the outer peripheral surface of the main body 2. In this case, it is preferable that the torsional vibration damper 10 has a plurality of groove portions 3. In addition, the width of the groove 3 is preferably smaller than the wire diameter of the coil spring 13.

Claims (5)

1. A torsion damper is configured in a coil spring, and comprises:
a cylindrical main body part formed of a resin-made elastomer; and
A groove portion formed on an outer peripheral surface of the main body portion,
The groove portion extends in a spiral shape,
The winding direction of the groove portion is opposite to the winding direction of the coil spring.
2. The torsional vibration damper of claim 1, wherein,
The width of the groove part is smaller than the wire diameter of the spiral spring.
3. Torsional vibration damper according to claim 1 or 2, wherein,
The trough portion has a bottom portion and a pair of side wall portions,
The pair of side wall portions are inclined in a mutually approaching manner as approaching the bottom portion.
4. Torsional vibration damper according to claim 1 or 2, wherein,
The diameter of the main body portion is constant except for a portion where the groove portion is formed.
5. A damper device is provided with:
A first rotation member configured to be rotatable;
a second rotating member configured to be relatively rotatable with the first rotating member;
a coil spring elastically connecting the first rotating member and the second rotating member; and
The torsional vibration damper of any one of claims 1 to 4, disposed within the coil spring.
CN202011144301.3A 2019-10-31 2020-10-23 Torsional damper and damper device Active CN112747059B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-198318 2019-10-31
JP2019198318A JP7355606B2 (en) 2019-10-31 2019-10-31 Torsion damper and damper device

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Publication Number Publication Date
CN112747059A CN112747059A (en) 2021-05-04
CN112747059B true CN112747059B (en) 2024-05-14

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JPS6113786Y2 (en) * 1980-06-05 1986-04-28
JP3731236B2 (en) * 1996-02-28 2006-01-05 アイシン精機株式会社 Torsion damper
JP2000205339A (en) 1999-01-19 2000-07-25 Exedy Corp Elastic float body
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US20210131498A1 (en) 2021-05-06
JP7355606B2 (en) 2023-10-03
JP2021071167A (en) 2021-05-06
CN112747059A (en) 2021-05-04

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